MTL - One Piece: The Long Road - Chapter 1 haze

A scientific genius named Thomas Harrier was transmigrated to an imperial prince body after a car accident that took his life. He found out that he is in a world similar to our own with a timeline akin to early twentieth century. The body that he is occupying was the imperial prince of a failing empire who suddenly rose to power after a successful assassination attempt of his father. Unaware that the attack is just the beginning of what is to come. He faces many challenges throughout. Will Thomas Harrier be able to live his second life in peace while running an empire and getting it back to its former glory? Or will he succumb into a conspiracy lurking within the country's borders?

Expect some:

Cold war era techs.

Super battleship with advanced electronics, propulsion, and fire control systems?
Helicopters?
Missiles?
Modern medicines and equipment?
AC-130?
A nuke?
Challenger or Abrams or Leopard?
F-4 Phantom or MIG-21?
Colored TV's.

Everything!!!

PS. Cover not mine, I just found it on google.

[Warning : Mature content R-18]*Premium quality lemons*Excellent waifu with genuine and diverse characters.*Milfs in equal abundance.*Harem members all equally important to the story!*****************************In a world ravaged by the XY Plague, a relentless genetic virus targeting the Y chromosome and crippling male fertility, Zafron, an 18-year-old orphan, faces a grim fate. Sold by his manipulative stepmother to a powerful noblewoman known for her wealth and influence, Zafron's life takes a sudden and dangerous turn.Lady Matilda, determined to secure a future for her noble house amidst the dwindling male population, discovers an astonishing truth about Zafron through rigorous genetic testing that changes everything.Disposed and discarded to his own means, Zaphron falls into a fatal encounter. Now at the point of death, pitied by a diety, Zafron is granted a system but not just any system. Zaphron is gifted the Eros vitality system!Now with his system, he emerges as the most genetically potent male known to exist in his world. But of course, this comes with a price.—Zafron now becomes a target not only for ambitious and desperate noble mistresses but also for men desperate to restore their own fertility, he must navigate a perilous path where trust is scarce and danger lurks at every turn.-------------------[Lady Seraphina, prime minister of Talkyo wants your seed][Princess Cordelia von Aldenberg would like a night with you][The prime minister of Winchester, her excellency is offering her daughter to you].....“I never asked for this burden, but I will carry it. My potency is not just a gift—it's a responsibility to safeguard the future of our kind. So to all the women that I love, believe me when I say that my precious seed will be yours if you give me one thing...”

A hero must be compassionate, selfless and courageous.But that isn't all. Because a hero must also be powerful.In this world, power is everything. Strength decides who gets to save lives and who's left with community service. That’s why I was nothing — a rank 50 E-Class reject, skating through the streets, saving what little I could while the real heroes battled gods and monsters.Then one day, I died. Almost.Dragged into the abyss, I was given a second chance: the Forever Core. An armor that evolves. A system that never stops adapting. Every battle, every hit, every mistake, I come back stronger.Now, the monsters that once crushed me can’t kill me the same way twice.I must adapt. Evolve. I must grow stronger and fight harder. Because humanity is worth fighting for.Even if I have to burn every villain alive to prove it.

Lady Mi Qing ran away from home to escape an arranged marriage. She is then confronted with the following wretched situation:

Card stopped. Money stolen. All she had left was ￥308.50.

In this strange city, her sole hopeful light was a small advertisement on a lamppost——

Elaborately Decorated, 100 Square Meters, 2 Room Apartment, Monthly Rent Only ￥299! If interested, quickly contact Mr. Xiao at 138XXXXXXXX!

Mi Qing immediately rushed over to the address listed.

Xiao Gu looked at the woman standing in front of him, brows slightly furrowed. When did he post an apartment rental advertisement?

- Description from Novelupdates